In chapter 4.2.1.2 step 9, Special Rule dictates: "if a German attack succeeds against an area with a player's supply base, then the player must permanently lose 1 action cube. In this case defending units do not retreat from the target area."Instead at the end of chapter 4.4 is written: "If any German units occupy a Western or Soviet supply base at the end of a game turn, then the supply base's owner permanently loses 5 action cubes from their pool."It seems that the two rules are contradicting: can a German unit occupy a player's supply base or not?